1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866ed0f2ae8135c1b467a4a1e9cfb11a1ad19251fd8f1690a4d5d3785171ae62. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08ae9567-ce10-4435-8c54-41b041c3b33e.json and https://artists.proofprofile.net/proofs/artist/08ae9567-ce10-4435-8c54-41b041c3b33e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab87a7222bbe44c384b5557b8a2b53bf7f713487dcbb201a681bc8b34028b62. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062396409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a56a99b38fa97d85ce7e4d17fd508518612483068610ffa7533fb161b17f37c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062396410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c7bacd3e7e8ed98d170edc2d5c73fa6e70b96e4b1083e6f0466cf5f8ebdee4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062396412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5223365d5f6afb1df609f183690420c7e8367ec4ebb905e252b64c3ed31c63. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062396413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab008593e3a049b191dccc326e4f2aeb58159f94ac7f8e61a5ba1012ff8cdf6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062396408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecae6f71fd0e2b1b2ce54ced4ef23daa7834a66f7ac32b12a7f8e47fdb89b2fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062418448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900cc0f341f19aa07a6068f376a5ebb2ae6fba3fc316051fe8e32c94fc37ba95. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062418449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3892dc2151a4fac59937f19bb4320105d8d4ff54c82674beeee575189bd73d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062420894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a9fb4a017d6e6f9e2ef38fdbc9ad4718ad7c546baf5230305a029f423f3b11. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062398571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a93075bfe041d05f4333fc8491237f0f363b2626b069157c961d713ee439858. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062406124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd768380105241ebda321c7789d699d3e7014c36af10e8b1a43cd769bdb3dcfe8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062420892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5340036d4f64f6aaa8875f13d6abceb1716dd397f8dc3dc7b7224739a55149b1. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062418447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b52261151c4d2315bf8da8d13919c3439825e915b5430762bb0e9ec9f2fed2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062420942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed811545b7f9f1886ad8a17a254d65ef923213ee93834bace4dd4db80dd2c27. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062418450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c7bacd3e7e8ed98d170edc2d5c73fa6e70b96e4b1083e6f0466cf5f8ebdee4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062396412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5223365d5f6afb1df609f183690420c7e8367ec4ebb905e252b64c3ed31c63. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062396413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a9fb4a017d6e6f9e2ef38fdbc9ad4718ad7c546baf5230305a029f423f3b11. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062398571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a93075bfe041d05f4333fc8491237f0f363b2626b069157c961d713ee439858. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062406124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3892dc2151a4fac59937f19bb4320105d8d4ff54c82674beeee575189bd73d9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062420894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5830575beb48ae02d8391b61453b26d0a931ef6e8e5b314ce83742feb1cf7bf4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062433866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb4ffb48b9a5eb8e56e47785f2991bad80871d88901f20efe8c475e2e4612ac. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLC062443528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f558ad47fcc7ac8d806316df183c3304398dad6826a7e171da2bd32739f6366. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLF242413509.